What do you set the dip switches on a sunpro tach to for a v8?

To set the dip switches on a Sunpro tachometer for a V8 engine, you'll typically set switch 1 to the "ON" position and switch 2 to the "OFF" position. This configuration is necessary to ensure that the tachometer reads the correct RPM for a V8, which fires every 90 degrees of crankshaft rotation. Always refer to the specific manual for your tachometer model for exact dip switch settings, as variations may exist.